The New York Police Department says it has arrested a man in connection with a house explosion that killed a fire battalion chief.

Police say Manhattan resident Garivaldi Castillo was arrested Wednesday on charges of criminal possession of marijuana. Police haven't said how he's connected to the Bronx explosion.

Chief Michael Fahy was killed by falling debris Tuesday while directing operations from the street. He had been supervising an evacuation following a report of a gas leak at the two-story house. He was a 17-year fire department veteran and father of three.

Authorities are looking into whether the building that exploded was being used to grow marijuana.

Castillo can't be reached for comment while in custody. It's unclear if he has a lawyer.

Police are questioning another man for possible ties to the explosion.